The movie here is Neutron the Atomic Superman vs. the Death Robots
). It's the second of three Neutron movies in this series. In it, the masked Mexican wrestler Neutron (Wolf Ruvinskis) fights the forces of his arch-villain Dr. Caronte (Julio Alemán) who wants to make and use the "neutron bomb" Neutron stopped him from making before.
This is jam-packed with general silliness, goofy costumes, wild, nutty dialog, and crazy action. I loved it. As it happens, I recently watched a half-dozen Santo movies, and loved them, too. Santo is more of a wrestler than Neutron, who primarily uses his fists in fights. This could easily have been a Santo movie, though. In fact it's similar to Samson vs. the Vampire Women
in some respects.
My favorite line, uttered by the police chief, "I don't think." Neither did the makers of this film, and I'm glad of it.
I downloaded the 900MB AVI file. It's a black and white movie. Video and audio quality were fine.